| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1701 | Tavis | Irish | Variant of the word 'teeve' meaning hillside. | M | |
| 1702 | Tavon | Irish | Variant of the word 'teeve' meaning hillside. | M | |
| 1703 | Tawnee | Irish | A green field; the warm sandy color of a lion's coat. | F | |
| 1704 | Tawney | Irish | A green field; the warm sandy color of a lion's coat. | F | |
| 1705 | Tawni | Irish | A green field; the warm sandy color of a lion's coat. | F | |
| 1706 | Tawnia | Irish | A green field; the warm sandy color of a lion's coat. | F | |
| 1707 | Tawnie | Irish | A green field; the warm sandy color of a lion's coat. | F | |
| 1708 | Tawny | Irish | A green field; the warm sandy color of a lion's coat. | F | |
| 1709 | Tawnya | Irish | A green field; the warm sandy color of a lion's coat. | F | |
| 1710 | Tawnya | Irish | A green field; the warm sandy color of a lion's coat. | M | |
| 1711 | Teagan | Irish | Good-looking. | F | |
| 1712 | Teaghue | Irish | Poet. | M | |
| 1713 | Teague | Irish | Poet; Handsome. | M | |
| 1714 | Teamhair | Irish | Where the kings met. | F | |
| 1715 | Tegan | Irish | Good-looking. | F | |
| 1716 | Teige | Irish | Good-looking. | F | |
| 1717 | Terence | Irish | Old form of the Roman clan name Terrance. | M | |
| 1718 | Teris | Irish | Son of Terrence. | M | |
| 1719 | Terrence | Irish | Tender. | M | |
| 1720 | Terriss | Irish | Son of Terrence. | M | |